LS Industrial Systems XBC-DN10E, User Manual

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Chapter 6 Instruction Details
XBC E-Type Main Unit 6-132 Ver. 1
6.23.6 Byte/Nibble Compare
(Byte: 8<, 8<=, 8<>, 8=, 8>, 8>=) (Nibble: 4<, 4<=, 4<>, 4=, 4>, 4>=)
Instruction
Area Available
Step
Flag
P M K F L T C S Z D.x R.x
Co
nst.
U N D R
Error
(F110)
Zero
(F111)
Carry
(F112)
x
(compare
operators)
S1 O O O - O - - - - O O O O - - -
3~4 - - -
S2 O O O - O - - - - O O O O - - -
Byte
x Operators
Nibble
x Operators
Name Condition
Operation
result
Condition
Operation
result
8< 4<
Less Than
S1 < S2 On S1
≥
S2 Off
8<= 4<=
Less Than or Equal To
S1
≤
S2
On S1 > S2 Off
8<> 4<> Not Equal To
S1
≠
S2
On S1 = S2 Off
8= 4=
Equal To
S1 = S2 On S1
≠
S2 Off
8> 4>
Greater Than
S1 > S2 On S1
≤
S2 Off
8>= 4>= Greater Than or Equal To
S1
≥
S2
On S1 < S2 Off
Operand Description Data Type
S1 Data or data address to compare with S2 NIBBLE/BYTE
S2 Data or data address to compare with S1 NIBBLE/BYTE
*Note: Compare instruction must be used in Input (Contact) Position of ladder rung. This instruction uses 3
contact points.
1) LOAD x (Byte: 8=, 8>, 8<, 8>=, 8<=, 8<>) (Nibble: 4=, 4>, 4<, 4>=, 4<=, 4<>)
a) Ladder Structure: Compares S1 and S2. If x operation is true, coil CR1 will be On. Otherwise CR1 will be
Off.
b) Example: If D01000.0=10 and D02000.0=10, nibble compare input signal is turned On and ‘h1500’ is saved
in P0160 area.
MOV h1500 P0160
4= D01000.0 D02000.0
c) Example: If D01000.0=100 and D02000.0=255, byte compare input signal is turned On and ‘h0015’ is
saved in P0160 area.
Input Positions
Output
Position
x S1 S2 LOAD x
Coil
CR1